What two numbers multiply to -680 and add up to 338?

Here we answer the question: "What two numbers multiply to -680 and add up to 338?"

The answer to your question is:

-2 and 340

Below we illustrate and prove that -2 and 340 multiply to -680 and add up to 338:

-2 × 340 = -680
-2 + 340 = 338

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 338x - 680 = 0

If so, the solution to factor the quadratic equation above is:

(x - 2 ) (x + 340)

To summarize, since -2 and 340 multiply to -680 and add up 338, you know that the following is true:

x² + 338x - 680 = (x - 2 ) (x + 340)

Multiply To One Number and Add Up To Another
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